Combined ventilator and screen for windows.



T. H. GARLAND.

COMBINED VENTILATOR AND SCREEN FOR WINDOWS.

APPLICATION FILED JAN. 19, 1912. u 1952912, Patented 11811111913.

2 SHEETSSEEET 1.

T. H. GARLAND.

COMBINED VENTILATOR AND SCREEN FOR WINDOWS.

APPLIUATION FILED JAN. 19. 1912.

Patented. Feb. 11, 1913.

2. SHEET S-SHBET 2.

l ITE alf STATES PATENT FFICE.

THOMAS H. GARLAND, F CHICAGO, ILLINOIS.

COMBINEDy VENTILATOR AND SCBIEEN FOR WINDOWS.

Specification of Letters Patent.

Patenmarca 11,1913.

Application led January-19, 1912. Serial No. 672,166.

' To all 'whom it may concern:

Be it known that I, THOMAS I-I. GARLAND, residing at Chicago, in thecounty of Cook and State of Illlnois, have invented certain new anduseful Improvements in Comrailway coaches and buildings of all kinds.

Among the important objects of my invention are to provide a combinedventilator and screen device which can be inserted between a window andlts s1ll and whlch can be adjusted to control the air flow in eitherdirection through the window opening and which can be adjusted tocontrol the effective area of said opening or to entirely close theopening; to provide a construction which will substantially prevent theentrance with air of heavier particles, such as smoke, soot, dust orcinders, yet which will allow the clean air to enter; to provide aconstruction in which adjustment for air' How can be readilyaccomplished by the occupants of seats adjacent the structure; toprovide a construction which will adapt the combined window ventilatorand screen devices to be used efficiently in connection with mainventilator mechanisms for railway coaches and buildings to moreeiiiciently control the ventilation; and 'in general to provide, a moredesirable and more eiicient device of the class referred to.

In the drawings, which illustrate the various features of my invention,Figure l is a top View of a ventilator and screen, part of the top wallof one of the sections being broken away, Fig. 2 is a view of the innerside of the device, part of the front wall of one of the sections beingbroken away, Fig. 3 is a fragmentary perspective view, showingparticularly the adjusting arrangement for the air directing elements,Fig. 4 is a perspective view, showing the device applied to the windowof a railway coach or building, Fig. 5 is ,an enlarged sectional viewtaken on plane 5 5, Fig. 2, and Fig.

,6 is an enlarged sectional view taken on plane 6-6, Fig. 2.

The device may comprise a single section A of suiicient length to extendventirely across the window to be fitted, or the device may comprise aplurality of such sections A which are preferably hinged together, so

that they can be easily adjusted to the window and when not in use maybe folded together. The particular device of the drawings comprises twosections A hinged together at 10, as best indicated in Figs. 1 and 60 2.The various sections are identical in construction, and each comprises asupporting sash 11 which may be of wood or which Vmay be formed up ofsheet metal, the height of the sashes and the combined length thereofwhere a number of sections are used being such that the device will fitbetween the sides of ,the window frame and between the open window andthe sill. Inserted in each sash is a frame 12 preferably of sheet 70.

metal, whose outer edge section is deflected outwardly at right anglesto form a Hange 13 for engaging against the outer side yof the sash. Theopening surrounded by the flange 13 is preferably covered by grill- 75work 14 of metal bars, and this grill is secured at its edge as byscrews 15, and in common with the flange 13, to the sash. The inner edgesections of the frame 12 are deflected inwardly at right angles to forma flange 16, to which is secured a frame 1.7 shown as of U-crosssectionrfor receiving the edges of a screen panel 18. This screen panel may beof woven wire, but is preferably of perforated sheet metal which can bemore readily cleaned and which is also of greater strength and willretain its Yshape better than the woven wire. The horizont-alg, depth ofthe frame 12 is preferably such that the screen 18 will not vextendbeyond the 90 plane of the outer faces F of the window frame.

Between the grill and the screen is a row of vanes or louvers 19, eachhaving upper and lower pivot ends 2O and 20 whereby 95 they are pivotedto the upper and lower walls of the frame 12. The vanes or louvers arepreferably of sheet metal, but can be made of any suitable material.Each louver has pivotal engagement at its upper inner corner with aconnecting and adjusting bar 22. As shown, a vertical pin 23 extendsup-l wardly from the upper inner corner of each louver and pivots in theopening 23 through one of the lugs 24 extending inwardly from 105 thebar 22, these openings having the same horizontal sp acing as the vanesor louvers, so that the vanes or louvers will at all times be parallel.Upon moving the bar longitudinally the louvers may be simultaneouslyadjusted to various angles, and may also:V be moved into acommonvertical plane to .substantially cut off all flow of.- air through thedevice. In order to more readily adjust the louvers and to lock them inadjusted position an 'adjusting lever 25 is provided. b ecu'redto thetop wall of t-he frame 12 is a U-shaped bearing block 27 whose limbshave openings for receiving a pivot screw 28 adapted to thread securelyin the lower opening, these openings `being in vertical registrationwith the pivot line of one of the louvers, preferably the center one.The rear end of' the lever 25 engages in the U-frame and receivesthepivot screw 28, so that the lever' ycany be swung in a horizontal planeoverthe top wall of the device. At an intermediate point the lever has ahole 29 through which extends the screw 30 having the knurled head 31.At its lower end the screw is adapted to thread through the bar 22, anda slot 32 concentric with the pivot screw 27 is provided in the top wallof the frame 12 so. that as the lever 25. is swung the screw 3G-willpass through the slot, and the bar 22v will moveto cause simultaneousrotation of the louvers to which it is pivoted. The lever 25 has also alug 33 for engaging the top of the frame 12, and through this lug thescrew 30 passes. When the lever has been moved to accomplish the desiredadjustment the head 31 is turned in the direction to cause the bar to bethrown upwardly into clamping engagement with the top wall of the frame12 and to cause the lug 33 on lever 25 to be clamped securely againstthe top wall of the frame, the parts being thus locked in adjustedposition. If it is desired to move the lever into another 40 positionthe vhead 31 is turned in the opposite direction'to release the leverandthe barwhereupon the desired adjustment can be made, and the leverand bar again locked.

A quarter-round moldingll preferably sur- 45 rounds the frame 12 and issecured against sthe inner face of the sash, the molding beingrecessed-at 35 to accommodate the bearing block2b,v andother vrecesses36 and 37 are also provided to accommodate the head 31 of the adjustingscrew when the lever reaches the ends-of the slot 32,. c

Referring particularly to Figs. 1 and 4', assume that the structureis'applied to a railway coach, and-that the coach is traveling towardthe left. The vanes or lou-vers when set as shown in the advanceAsection will scoop up; the-air entering through the grillwork and'/willffdeflect ity into the car, whilethe vanes 'if-set; as shown inthe' rear section,

' will tend to deflect outwardly vtheairwhich strikes them andparticularly to deflect outwardly the more solid particles, such as'smoke and cinders, and these vanes will also tend to cause air flow fromthe interior of the car to the exterior. The vanes and loudesired How ofair through the open window, and adjustment is readily made by theoccupants of the seats. In the present method of inserting a commonscreen `in the window opening, no adjustment could be made, and if noair flow'was desired through the window opening the screen had ltoberemoved. My device can remain per- ,manently in the window opening, andthe linlet or outlet area can be varied at will or entire closureeected. v

' In railway coaches, particularly in Pullman cars, Ventilating mechaisms are provided for causing circulation of, fresh air through thecoach, and my improved device herein can be used very efficiently lforinlets for fresh air in conjunction with such ventilating mechanism. Inthe present system,

=where ordinary screens are used, if all the EWindows are closed theventilator mechainism cannot operate properly, as the coach @would beentirely closed, but where my devices are used, even though thelouversof all the devices are in closed position, the iit Lis not sotight but that under pressureor suction there would be passagewaytherethrough, and although there would not be ,direct drafts through thewindow ventilat- 'ing devices, there would. be sufficient passageway toallow the main ventilator mechanisms of the coach to draw in air between'the louvers and their containing frames.

The present ordinary screens do not prevent the entrance of smoke, sootor small cinders, but here my improved devices are installed it is verydiiicult for. smoke, soot or cindcrs or dust to enter. The smoke anddust-laden air will first strike the grill-work 14, and a great many ofthe solid particles will be deflected away. Thelouvers will act asbaliie plates for the remaining particles and will tend to check theirflying and cause them to drop to the bottom of the frame l2, from wherethey can be carried to the outside. The screen 17 will-strain out theremaining particles fromthe inijlowing air, so that practically freshair will enter at all times into the coach. The lower inturned flange16va to which-the screen frame 17 is secured, performs an importantfunction, as' it prevents entrance through the screen of particles whichare deflected to the bottom of the frame 12 by thelouvers. The

- outlowing air currents will pick up the particles and, c'arry themoutthrough the grill- Work. l

My improved device can of course be utirio lized with equal efficiencyin any opening.

Railway coaches usually have double windows, and my improved deviceV canbe inserted with its sash between the sill and the sash of eitherwindow. I do not desire to belimited to the precise construction andarrangement herein shown, as modiiications,

; trolling the iow therethrough, said flange preventing entrance throughthe inner end' of saidy frame of particles deflected to the bottom ofsaid frame by said louvers.

2. In a device of the class described, the

.combination of a sash adapted to be insert-- ed in an opening throughwhich ventilation is desired to be'accomplished, a' rectangular sheet`metal frame lining said sash, a screen secured to the inner edge ofsaid frame, grill-work 4secured to the outer edge of said frame,vertical louvers in a horizontal rowl within said frame and pivotedinthe upper and lower walls thereof, a connecting rod disposed belowtheupper wall of said frame and having pivoted connection with theadjacent upper corners rof said louvers, `the upper wall of said framehaving a segmental slot, a `stud extending through said slot and havingscrew threaded engagement with said connect-ing rod whereby said rod may@be moved to simultaneously adjust the lou- `vers and whereby said rodmay be clamped justment thereof.

3. In a device of the class described, the

combination of a'sash adapted to be inserted in an opening through-which ventilation is d' desired to be accomplished, a' rectangularsheet metal frame lining said sash, a screen secured to the inner edgeof said frame, ill-work secured to the outer edge of said rame, verticallouvers in al horizontal row within said frame and pivoted in the upperand lower walls thereof, a connecting rod disposed below the upper wallof said r and having pivoted connection with the adjacent upper cornersof said louvers, the upper wall of said frame having a segmental slot, astud extending through said slot and having screw threaded engagementwith said connecting rod, an adjusting lever piv oted concentric withthe upper pivot of one of said louvers and hav-ing an opening forreceiving said stud, swing of said lever causv ing movement .ofvconnecting rod to simultaneously adjust-'said louvers and turning ofsaid stud causing said rod, said lever and said top wall to be clampedtogether.

In witness whereof, I hereunto subscribe my name this 15th day ofJanuary, A. D.

THOMAS Hl GARLAND.

Witnesses NELLIE B. DEARBORN, J. M. LU'rzs

